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So my ultimaker sometimes lags like crazy. This does not seem to have anything to do with model complexity, as other times it works great on very complex models (yoda, voronoid tower) and, as seen in the video, lags alot on even the infill of simpler models like the geared heart. It could have to do with CPU load of the host computer, as I was printing with Pronterface supplied with Cura, and slicing another model at the same time, but it is a dual core CPU, and slicing does not seem to thread very well, and it didn't stop lagging when I either decreased the process-priority if the slice, and increased the priority of Pronterface (all instances I could find), or turned the slicer of and shut Cura down, and waited. Is this the buffer underflow issue I have been seeing floting around? I'm using linux - Ubuntu 10.10, and thus have a baud rate of 115200.

Any ideas?

(also - dual 60mm fans :D I hate fan-noise, but also don't want overheating. Now I just have to learn to CAD so I can make a nice fan shroud...)

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    Alright, so it replicates on that .gcode file, but not on others. Pronterface also seems to behave strangely around that file, so I'm trying to re-slice it now.

    [Edit - added] So the new .gcode prints fine. Lesson learned, does anyone know what happened? Does anyone want to analyze the faulty file?

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